There must be some misunderstanding there. The goal is to write:
> clang++ -target sparc--netbsd -mcpu=... compile_flags --sysroot=... --toolchain=.. -o program.exe program.cpp And clang will cross-compile program.cpp for this specific sparc cpu using the includes from the sysroot, and link using the linker and libraries from sysroot+toolchain. I do no think there is any reason to try to use "g++-arm-linux-gnueabi" with sysroot, and the fact that the g++ you refer to does not work with --sysroot is something not relevant to this clang user mailing list --- but I may be missing something. For your specific problem, you may want to give a try to the gcc packaged by linaro (http://www.linaro.org/downloads/) which works pretty well in my experience. Kind regards, Arnaud On Thu, Mar 24, 2016 at 8:29 PM, Jeffrey Walton <noloa...@gmail.com> wrote: > On Thu, Mar 24, 2016 at 11:48 AM, Arnaud Allard de Grandmaison via > cfe-users <cfe-users@lists.llvm.org> wrote: > > Hi Patrick, > > > > This is a common case when cross compiling, so clang knows how to use a > > gcc-toolchain installation: you just have to pass it the "--sysroot=..." > and > > "--toolchain=..." arguments, and it will get the header files and linker > / > > assembler for your target --- assuming your gcc-toolchain has a standard > > layout. > > That last caveat is the one that gives me the most trouble on Ubuntu. > They seem to have an odd layout for their ARM-HF toolchain, and using > --sysroot fails to compile/link. Also see "g++-arm-linux-gnueabi > cannot compile a C++ program with --sysroot", > > http://bugs.launchpad.net/ubuntu/+source/gcc-defaults-armel-cross/+bug/1375071 > . > > Jeff >
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